This book mainly emphasizes the human distinction amongst all living things in the sexual subject. Basically just a union of 2 opposite genders in the reproductive aspect, humans literally shook the subject beyond that purpose. Section I addresses the instinctive animal part where humans share biological similarities to their counterparts. This section identifies the very heart of the human distinction: the gift of reason and intelligence. The author offers compelling evidence and explains here exactly what, how, and why. Section II is made up of two long chapters detailing the male and female differences. Yes, both are really worlds apart psychologically and physiologically. These chapters enable the reader to reconcile and fully understand his/her mate in all norms and absurdities. In Section III the reader will enhance his/her knowledge in the many distinct sexual behaviors manifested only by humans. Readers will find the different types, origins, thinking, and feelings of the many different sexual orientations as well as applications. Concluding this fantastic section is the compilation of human sexual misbehaviors and escapades. Happy Reading!